PhilGoetz comments on Extreme risks: when not to use expected utility - Less Wrong

4 Post author: Stuart_Armstrong 23 October 2009 02:40PM

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Comment author: PhilGoetz 26 October 2009 06:25:34PM 0 points [-]

I did wonder what Stuart meant when he started talking about adding probability distributions together. In the usual treatment, a single probability distribution represents all possible worlds, yes?

Comment author: Douglas_Knight 27 October 2009 01:05:51AM 0 points [-]

Yes, the axioms are about preferences over probability distributions over all possible worlds and are enough to produce a utility function whose expectation produces those preferences.